1438697 has 6 divisors (see below), whose sum is σ = 1558062. Its totient is φ = 1327872.

The previous prime is 1438687. The next prime is 1438709. The reversal of 1438697 is 7968341.

It can be written as a sum of positive squares in 3 ways, for example, as 141376 + 1297321 = 376^2 + 1139^2 .

It is not a de Polignac number, because 1438697 - 2⁴ = 1438681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438697.

It is not an unprimeable number, because it can be changed into a prime (1438667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4088 + ... + 4425.

It is an arithmetic number, because the mean of its divisors is an integer number (259677).

2^1438697 is an apocalyptic number.

It is an amenable number.

1438697 is a deficient number, since it is larger than the sum of its proper divisors (119365).

1438697 is an equidigital number, since it uses as much as digits as its factorization.

1438697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539 (or 8526 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 1438697 is about 1199.4569604617. The cubic root of 1438697 is about 112.8902529110.

The spelling of 1438697 in words is "one million, four hundred thirty-eight thousand, six hundred ninety-seven".